--- /dev/null
+#include <OneWire.h>
+#include <DallasTemperature.h>
+
+// Data wire is plugged into port 2 on the Arduino
+#define ONE_WIRE_BUS 3
+
+// Setup a oneWire instance to communicate with any OneWire devices (not just Maxim/Dallas temperature ICs)
+OneWire oneWire(ONE_WIRE_BUS);
+
+// Pass our oneWire reference to Dallas Temperature.
+DallasTemperature sensors(&oneWire);
+
+// arrays to hold device addresses
+DeviceAddress insideThermometer, outsideThermometer;
+
+void setup(void)
+{
+ // start serial port
+ Serial.begin(9600);
+ Serial.println("Dallas Temperature IC Control Library Demo");
+
+ // Start up the library
+ sensors.begin();
+
+ // locate devices on the bus
+ Serial.print("Found ");
+ Serial.print(sensors.getDeviceCount(), DEC);
+ Serial.println(" devices.");
+
+ // search for devices on the bus and assign based on an index.
+ if (!sensors.getAddress(insideThermometer, 0)) Serial.println("Unable to find address for Device 0");
+ if (!sensors.getAddress(outsideThermometer, 1)) Serial.println("Unable to find address for Device 1");
+
+ // show the addresses we found on the bus
+ Serial.print("Device 0 Address: ");
+ printAddress(insideThermometer);
+ Serial.println();
+
+ Serial.print("Device 0 Alarms: ");
+ printAlarms(insideThermometer);
+ Serial.println();
+
+ Serial.print("Device 1 Address: ");
+ printAddress(outsideThermometer);
+ Serial.println();
+
+ Serial.print("Device 1 Alarms: ");
+ printAlarms(outsideThermometer);
+ Serial.println();
+
+ Serial.println("Setting alarm temps...");
+
+ // alarm when temp is higher than 30C
+ sensors.setHighAlarmTemp(insideThermometer, 30);
+
+ // alarm when temp is lower than -10C
+ sensors.setLowAlarmTemp(insideThermometer, -10);
+
+ // alarm when temp is higher than 31C
+ sensors.setHighAlarmTemp(outsideThermometer, 31);
+
+ // alarn when temp is lower than 27C
+ sensors.setLowAlarmTemp(outsideThermometer, 27);
+
+ Serial.print("New Device 0 Alarms: ");
+ printAlarms(insideThermometer);
+ Serial.println();
+
+ Serial.print("New Device 1 Alarms: ");
+ printAlarms(outsideThermometer);
+ Serial.println();
+}
+
+// function to print a device address
+void printAddress(DeviceAddress deviceAddress)
+{
+ for (uint8_t i = 0; i < 8; i++)
+ {
+ if (deviceAddress[i] < 16) Serial.print("0");
+ Serial.print(deviceAddress[i], HEX);
+ }
+}
+
+// function to print the temperature for a device
+void printTemperature(DeviceAddress deviceAddress)
+{
+ float tempC = sensors.getTempC(deviceAddress);
+ Serial.print("Temp C: ");
+ Serial.print(tempC);
+ Serial.print(" Temp F: ");
+ Serial.print(DallasTemperature::toFahrenheit(tempC));
+}
+
+void printAlarms(uint8_t deviceAddress[])
+{
+ char temp;
+ temp = sensors.getHighAlarmTemp(deviceAddress);
+ Serial.print("High Alarm: ");
+ Serial.print(temp, DEC);
+ Serial.print("C/");
+ Serial.print(DallasTemperature::toFahrenheit(temp));
+ Serial.print("F | Low Alarm: ");
+ temp = sensors.getLowAlarmTemp(deviceAddress);
+ Serial.print(temp, DEC);
+ Serial.print("C/");
+ Serial.print(DallasTemperature::toFahrenheit(temp));
+ Serial.print("F");
+}
+
+// main function to print information about a device
+void printData(DeviceAddress deviceAddress)
+{
+ Serial.print("Device Address: ");
+ printAddress(deviceAddress);
+ Serial.print(" ");
+ printTemperature(deviceAddress);
+ Serial.println();
+}
+
+void checkAlarm(DeviceAddress deviceAddress)
+{
+ if (sensors.hasAlarm(deviceAddress))
+ {
+ Serial.print("ALARM: ");
+ printData(deviceAddress);
+ }
+}
+
+void loop(void)
+{
+ // call sensors.requestTemperatures() to issue a global temperature
+ // request to all devices on the bus
+ Serial.print("Requesting temperatures...");
+ sensors.requestTemperatures();
+ Serial.println("DONE");
+
+ // Method 1:
+ // check each address individually for an alarm condition
+ checkAlarm(insideThermometer);
+ checkAlarm(outsideThermometer);
+/*
+ // Alternate method:
+ // Search the bus and iterate through addresses of devices with alarms
+
+ // space for the alarm device's address
+ DeviceAddress alarmAddr;
+
+ Serial.println("Searching for alarms...");
+
+ // resetAlarmSearch() must be called before calling alarmSearch()
+ sensors.resetAlarmSearch();
+
+ // alarmSearch() returns 0 when there are no devices with alarms
+ while (sensors.alarmSearch(alarmAddr))
+ {
+ Serial.print("ALARM: ");
+ printData(alarmAddr);
+ }
+*/
+
+}
+\r